Ade Advanced Optics 1-Inch Scope Adapter Ring/Mount with Picatinny/Weaver Top Rail for Backup/Second Laser, Anodized Black Precision Machined Out of Premium 6061 Aircraft Aluminum Single Weaver-style 1 inch scope adapter See Through Design Weighs 0.9 ounces 5 slots picatinny/weaver rail for backup/Second Laser, sight or light